In this video v r going to see the refraction of light definition,first law and second law is explained with formula,Snell's law and the points given below the law is explained in detail
I appreciate your passion for teaching, however the explanation of what refraction is entirely not right. And, the way you explain the rarer and denser medium is entirely incorrect. Also, the explanation about 'normal' isn't entirely right either. Don't shout, try to explain better.